Abstract: A bifold electrode and separator assembly is disclosed for winding into a jelly roll galvanic cell, the first generally rectangular electrode being enveloped by first and second separator sheets having a width twice that of the electrode and a length substantially that of and slightly greater than the electrode, the first sheet being folded along one elongated edge of the electrode and adhered to the two side faces thereof, and the second sheet folded along the second elongated edge of the electrode and adhered to the first sheet over the two side faces of the electrode. A terminal tab extends from the electrode through the fold of one of the sheets. A second electrode is placed on the outside, and the assembly wound into a jelly roll for placement in a cell container.

Abstract: In an electrochemical wound cell having a negative and positive plate strip, and at least one inorganic separator interleaved between the plates, the improvement comprising: a thin sheet of flexible material having a leading and trailing end, the sheet wrapped around the wound cell and heat softened to attach the trailing end to a portion of the sheet between the leading and trailing ends. A method for making the electrochemical cell characterized herein is also described.

Abstract: A sheet-shaped electrode comprising a polymeric active material (1) and a collector (2) having a plurality of penetrating pores (3), a method of producing the same, and a secondary battery containing the sheet-shaped electrode as a positive electrode. The plurality of the pores provided on the sheet-shaped collector enlarges the contact area between the collector and the polymeric active material, so that close contact between these two members is improved. A polyaniline layer which is prepared by electrochemical polymerization of an aniline type compound in the presence of sulfuric acid or sulfonic acids is applied on both faces of the collector (aluminum) as the polymeric active material. In a secondary battery which comprises the sheet-shaped electrode as a positive electrode, the positive and a negative electrodes are alternately folded with a separator interposed therebetween.

Abstract: An electrochemical cell comprising a relatively thin strip of anode material, first and second electrolyte layers coated on the opposing surfaces of the anode strip, first and second relatively thin strips of cathode material contacting the first and second electrolyte layers, thereby forming a laminate strip with the electrolyte layers and anode strip and a single cathode current conductor strip. The laminate strip is deformed such that both of the first and second strips of cathode material contact the single cathode current conductor strip along substantially the entire length thereof.

Abstract: A protected electrode article comprising sensitive electrode material having a layer of protective material bonded to at least part of its surface by means of an adhesive which can be made to swell by treatment with liquid, so as to increase the permeability of the adhesive to electrolyte which is encountered by the protected electrode material when incorporated in an electrochemical device.

Abstract: A battery plate wrapper blank comprising a sheet of plate wrapper material is provided with attached longitudinal edge protective strips positioned to overlay the longitudinal sides of a battery plate which it is adapted to envelope and with a bottom edge protective strip attached along the bottom transverse margin of the sheet to overlay the bottom edge of the battery plate. The unitary plate wrapper blank is formed into a plate pouch without need of additional elements. Varients of the plate wrapper blank provide inner, outer or inner and outer longitudinal edge protective strips for the pouch, and a seal strip for the longitudinal seam of the pouch.

Abstract: This invention relates to an improvement on a sealed lead storage battery which comprises a case, positive and negative plates alternately disposed in a case, porous separators between the adjacent plates and electrolyte filled in the case so as to be retained at least in the porous separators.The sealed lead storage battery of the invention further comprises additional electrolyte porous retainer means disposed in an unoccupied space in the case so as to have increased amount of electrolyte. The additional electrolyte retainer means may be disposed in at least one of an upper space over the plate group, a lower space below the plate group and side spaces beside the plate group. The additional electrolyte retainer means may be of glass fine fiber mat, glass and synthetic fine fiber mat or gel. It may be integrally formed with the porous separators. Preferably, the positive and negative plates may be so porous that the electrolyte is retained in them.

Abstract: A cathode structure for a thin film battery in which a titanium oxide layer is disposed on a substrate and has a titanium disulfide thin film disposed thereon. The cathode structure exhibits an excellent performance when applied to a lithium battery, a sodium battery, etc.

Abstract: The disclosed lithium alloy/iron sulfide cell design provides loop-like positive and negative sheet metal current collectors electrically insulated from one another by separator means, the positive collector being located outwardly of the negative collector. The collectors are initially secured within an open-ended cell housing, which allows for collector pretesting for electrical shorts prior to adding any electrode materials and/or electrolyte to the cell. Separate chambers are defined outwardly of the positive collector and inwardly of the negative collector open respectively in opposite directions toward the open ends of the cell housing; and positive and negative electrode materials can be extruded into these respective chambers via the opposite open housing ends. The chambers and cell housing ends can then be sealed closed.

Abstract: A separator for an electrochemical cell comprising a container having opposing sides each formed from a layer of solid microporous material and a liquid polymer solution disposed within the container between said layers.

Abstract: A high power, low total energy storage battery is disclosed. The basic portion of the battery is a honeycomb separator which defines a plurality of rather small compartments. Alternate compartments throughout the separator are made to be anode compartments or cathode compartments by inserting electrodes, electrolyte and electrochemical materials in the various compartments. A preferred honeycomb separator is the honeycomb structure used as a support for an automotive exhaust catalyst.

Abstract: An energy system of the type having a galvanic cell which is supported within a receptacle for contact with an electrolyte within the receptacle. The galvanic cell includes a solid metal core, a porous electrode having a positive charge with respect to the core, and a porous separator layer disposed between and separating the core from the electrode to enable the flow of electrolyte therebetween. The electrode and separator layer are disposed about the core and the core is of a flat configuration having a large surface area as compared to its thickness so as to provide a high power output per unit of volume of the core. The electrode and separator layer are of a multi-layer construction being made of sheet material and wrapped about the core to enable control of the surface area of the electrode and the thickness of the separator layer whereby the power output and operating life of the cell may be controlled.

Abstract: A high energy density cell or battery capable of undergoing flexular stress with little effect on its discharge properties either during and after subjection to stress.

Abstract: Electrodes utilized in various types of batteries are interconnected by means of a pair of conductive bands insulated from each other and bent into a zig-zag formation. Each conductive band overlays an electrode of one polarity, thus performing the function of separator as well as terminal conductor. Upon compression of the stacked electrodes into a housing, a compact battery is produced.

Abstract: A multi-layer separator for use in alkaline storage batteries is disclosed. In one aspect of the invention the separator comprises bibulous, non-membranous layers together with a coating of a relatively thin layer of a gelling agent applied to at least one side of one of the bibulous layers. In another aspect of the invention, outer bibulous, non-membranous layers sandwich and are bonded to a semi-permeable membranous layer with an adherent gelling agent to form a high-strength laminated separator.These separators find use in a variety of alkaline galvanic cells, particularly in rechargeable cells such as nickel-cadmium, nickel-zinc, silver-zinc, manganese dioxide-zinc, and similar cells.